PM7347 datasheet(322/341 Pages) PMC

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S/UNI®-JET Data Sheet

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Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use

322

Document ID: PMC-1990267, Issue 3

Microprocessor Interface Timing Characteristics

(TA = -40°C to +85°C, VDD = 3.3 V ±10%)

Table 48 Microprocessor Interface Read Access (Figure 75)

Symbol

Parameter

Min

Max

Units

tSAR

Address to Valid Read Set-up Time

tHAR

Address to Valid Read Hold Time

tSALR

Address to Latch Set-up Time

tHALR

Address to Latch Hold Time

tVL

Valid Latch Pulse Width

tSLR

Latch to Read Set-up

tHLR

Latch to Read Hold

tPRD

Valid Read to Valid Data Propagation Delay

tZRD

Valid Read Negated to Output Tri-state

tZINTH

Valid Read Negated to Output Tri-state

Figure 75 Microprocessor Interface Read Timing

tZ RD

Valid Data

D[7:0]

tP RD

tSAR

tH AR

(CSB+RDB)

A[10:0]

Valid Address

ALE

tV L

tS ALR

tS LR

tH ALR

tHLR

tZ INTH

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